package observe;

import java.util.Observable;
import java.util.Observer;

/**
 * @author ink.tiptop.zjf
 * @Title: ticket
 * @Package observe
 * @Description:
 * @date 2020-07-29 11:43
 */
public class Observer2 implements Observer {

    @Override
    public void update(Observable o, Object arg) {
        System.out.println("Observer2");
        System.out.println(arg);
    }
}
